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Low-foam nonionic surfactant, preparation method therefor and application of low-foam nonionic surfactant

A non-ionic surface and active agent technology, applied in the direction of surface active detergent composition, polymer surface active compound, chemical equipment and methods, etc., can solve the problem of low product yield, achieve low foam, excellent emulsification, The effect of fast defoaming speed

Active Publication Date: 2018-10-16
联泓(江苏)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with alkyl-terminated polyether, because a large amount of waste salt and refined preparations will absorb a large amount of capped polyether, the yield of the product after filtration is very low

Method used

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  • Low-foam nonionic surfactant, preparation method therefor and application of low-foam nonionic surfactant
  • Low-foam nonionic surfactant, preparation method therefor and application of low-foam nonionic surfactant
  • Low-foam nonionic surfactant, preparation method therefor and application of low-foam nonionic surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Put starter C into the reactor 8-10 100g of straight-chain aliphatic alcohol is reacted with 168g propylene oxide (PO) under the effect of 1.2gKOH as catalyst at a reaction temperature of 100°C and a reactor pressure of 60Psi;

[0054] (2) Raise the reaction temperature to 120° C., keep the pressure constant and the catalyst constant, and react the polyether obtained in step (1) with 418 g of ethylene oxide (EO) to generate intermediate I;

[0055] (3) At a reaction temperature of 100°C, add 70g of butyl isocyanate and 0.35g of stannous octoate catalyst to 186g of intermediate I under normal pressure, then raise the temperature to 120°C and keep it warm for 8 hours to obtain a low-foaming nonionic Surfactant FCB01P.

[0056]

[0057] R 1 for C 8 straight chain alcohol or C 10 The alkane moiety of a straight chain alcohol.

Embodiment 2

[0059] (1) In the reactor, drop into initiator 60g isooctyl alcohol and 40g 2-ethylhexanol, be 100 ℃ at reaction temperature, reactor pressure is 60Psi, under the effect of 1.7gKOH as catalyst, with 186g propylene oxide (PO) response;

[0060] (2) Raise the reaction temperature to 120° C., keep the pressure constant and the catalyst constant, and react the polyether obtained in step (1) with 435 g of ethylene oxide (EO) to generate intermediate I;

[0061] (3) At a reaction temperature of 80°C, add 90g of cyclohexyl isocyanate and 0.60g of bismuth isooctanoate catalyst to 158g of intermediate I under normal pressure, then raise the temperature to 120°C and keep it warm for 6 hours to obtain a low-foaming nonionic Surfactant FCB02D.

[0062]

[0063] R 1 is the alkane moiety of isooctyl alcohol or 2-ethylhexanol.

Embodiment 3

[0065] (1) Put starter C into the reactor 8-10 100g of straight-chain aliphatic alcohol reacts with 174g of ethylene oxide (EO) at a reaction temperature of 120°C, a reactor pressure of 60Psi, and 1.4gKOH as a catalyst;

[0066] (2) Elevate the reaction temperature to 160° C., keep the pressure constant and the catalyst constant, and react the polyether obtained in step (1) with 100 g of ethylene oxide (BO) to generate intermediate I;

[0067] (3) Keeping the reaction temperature at 160° C., the pressure constant, and the catalyst constant, the polyether obtained in step (2) reacts with 174 g of ethylene oxide (EO) to generate intermediate II;

[0068] (4) At a reaction temperature of 90°C, add 130g of phenylisocyanate and 0.54g of stannous octoate catalyst to 180g of intermediate II under normal pressure, then raise the temperature to 130°C and keep it warm for 4 hours to obtain a low-foaming nonionic Surfactant FCB01F.

[0069]

[0070] R 1 for C 8 straight chain alco...

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Abstract

A low-foam nonionic surfactant and a preparation method therefor. The invention provides a nonionic surfactant represented by a general formula (1) shown in the description, a preparation method therefor and an application of the nonionic surfactant. The invention particularly relates to a method for preparing compositions through alkoxylation and addition reaction in the presence of a catalyst such as alkaline, acidic or bimetallic cyanides and use of the compositions as nonionic surfactants, particularly in textiles, industry, public washing and daily chemical industry.

Description

technical field [0001] The invention relates to a preparation method and application of a novel alkoxylate, in particular to a preparation and application of a low-foaming nonionic surfactant. technical background [0002] Surfactants are widely used and have penetrated into various civil and industrial fields. Among them, nonionic surfactants do not ionize in water, and are amphiphilic molecules with hydroxyl or ether bonds as hydrophilic groups. Due to the nonionic surface Active agents have the characteristics of non-ionization in water, which makes non-ionic surfactants superior to ionic surfactants in some aspects, such as better solubility in water and organic solvents, and high stability in solutions , not easily affected by strong electrolyte inorganic salts and acids and bases. Because of its good compatibility with other types of surfactants, it can often be mixed and compounded well. Nonionic surfactants have good hard water resistance and low foaming properties...

Claims

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Application Information

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IPC IPC(8): B01F17/42C08G65/333C08G65/28C11D1/722C09K23/42
CPCC11D1/008C11D1/722C08G65/2609C08G65/33351C08G65/33355C09K23/16
Inventor 刘广宇朱军成李方
Owner 联泓(江苏)新材料研究院有限公司
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